OK, so I figgered out if more than 9 waypoints or via points or any kind of points, at the 9th one she says you have reached your destination...every time! So no more than 9 points in a route. The goofy broad though won't let ya start a route from anywhere but the begginning. No matter where you are it wants to take you back to the start of the route, so that's where all the make a u turn ahead, turn right ahead, etc comes from. Broke an overnight route into day 1, day 1a and day 2, with day 1 start to lunch, day 1a lunch to motel, and day 2 motel to home, and she worked flawlessly. Now if they'd update the firmware so you can start a route from anywhere within the route (like the Garmin 665 asks recalculate from start or current location) and make the waypoint issue go away, I might go and sell the 665. Just my thoughts from the weekend trial.
BTW route was created from a buddies mapsource, saved as .gpx file, loaded on my pc, recalculated, saved as again, copied to thumb drive and imported to the dashboard.